[vorbis] 5.1 encoding?

[Teodor Mihai]

Hi,

I'm new to Vorbis and I need a little help understanding if 5.1 compression 
is actually supported. I've been trying to create a 5.1 file from either a 
vob or ac3 stream without much success. That is, BeSweet usually complains 
that the source has to be sampled at 48000Hz (it is) and just won't do it, 
so I've munged the command line until I got a 5.1 .ogg but only the normal 
stereo channels were in (that is - front left and front right had sound, 
everything else was quiet). I've also tried HeadAC3he, which was a little 
more successful at creating a 5.1 .ogg file with all the channels in, 
unfortunately it was about as big as the original .ac3, which I guess 
defeats the purpose. The utilities that can be downloaded from the vorbis 
website don't seem to support 5.1 encoding at all, so I was wondering is 
this just a file format capability with no actual encoder capable of 
achieving it?

many thanks,
teddy

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